WeBWorK using host: https://webwork-ptx.aimath.org, format: simple seed: 104

Suppose that [math] is a smooth function and that its partial
derivatives have the values, [math] and [math]. Given that [math], use this information to estimate
the value of [math]. Note this is analogous to
finding the tangent line approximation to a function of one variable.
In fancy terms, it is the first Taylor approximation.
Estimate of (integer value) [math]
Estimate of (integer value) [math]
Estimate of (integer value) [math]